Whenever George Lucas re-releases the Star Wars movies, he usually adds or changes scenes from parts of the movies which infuriates most fans. I don't support his changes either, but some of them fix continuity errors which I can understand. Here is my list of most hated changes from the re-releases.
Star Wars: A New Hope-Obi-Wan's Krayt Dragon call
Both the 1977 and 2004 versions of Obi-Wans scream sound similar, but the 2011 Blu-ray re-release sounds WAY too different. He sounds "like a gay man stepping on a lego". I don't really get that quote's logic but I really don't like his new scream.
Star Wars: A New Hope-Greedo shoots first
I HATE this change. In the 1977 theatrical release, Han Solo and Greedo have a conversation and all of a sudden Han shoots Greedo in cold blood. Then, George Lucas changed that in the 1997 theatrical re-release and made Greedo shoot first. His reason for this was to make Han seem more like a hero for younger viewers. Seriously, why change that? Han was supposed to be the anti-hero turned hero character. Now it's meaningless since Lucas made it seem like Han had no choice but to shoot him.
Star Wars: A New Hope-CGI scenes
I pretty much don't welcome any CGI scenes in A New Hope. I liked the original scenes better because they used actual puppets of aliens in the Cantina scene and models of the ships fighting eachother in the Death Star battle.
Star Wars: Return of the Jedi-CGI scenes(minus the Sarlaac)
I ESPECIALLY hate the CGI scenes in Return of the Jedi where a band is playing some music in Jabba's palace and we see a bunch of CGI aliens singing replacing the original puppet singers. I find it annoying how one of the singers jumps up to the screen and opens his mouth wide when he sings. I also preferred their original song "Lapti Nek" over their new song "Jedi Rock".
Star Wars: Return of the Jedi-Darth Vader kills the Emperor
In the releases of Return of the Jedi before the 2011 re-release, Darth Vader is speechless when he watches the Emperor torchering his his son, so he grabs the Emperor and throws him off a pit. In the 2011 Blu-ray version, Vader says "NO" twice before throwing him off. It truly bothers me when I hear this scene, it makes Vader sound whiny and weak. I just hate this change.